package com.changgou.file.controller;

import com.changgou.entity.Result;
import com.changgou.entity.StatusCode;
import com.changgou.file.pojo.FastDFSFile;
import com.changgou.file.utils.FastDFSClient;
import org.apache.commons.lang.StringUtils;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;

@RestController
@RequestMapping("/file")
public class FileController {
    @PostMapping("/upload")
    public Result uploadFile(MultipartFile file){
        //判断文件是否存在
        if (file==null){
            throw new RuntimeException("文件不存在");
        }
        //获取文件的完整名称
        String originalFilename = file.getOriginalFilename();
        if (StringUtils.isEmpty(originalFilename)){
            throw new RuntimeException("文件不存在");
        }
        //获取文件的扩展名称  abc.jpg   jpg
        String extName = originalFilename.substring(originalFilename.lastIndexOf(".") + 1);
        //获取文件内容
        try {
            byte[] content = file.getBytes();
            //创建文件上传的封装实体类
            FastDFSFile fastDFSFile = new FastDFSFile(originalFilename, content, extName);
            //基于工具类进行文件上传,并接受返回参数  String[]
            String[] uploadResult = FastDFSClient.upload(fastDFSFile);
            //封装返回结果
            String url=FastDFSClient.getTrackerUrl()+uploadResult[0]+"/"+uploadResult[1];
            return new Result(true, StatusCode.OK,"文件上传成功",url);
        } catch (IOException e) {
            e.printStackTrace();
            return new Result(false, StatusCode.ERROR,"文件上传失败");
        }

    }
}
